Electrifier cylinder

ABSTRACT

AN ELECTRIFIER CYLINDER HAVING A PLURALITY OF GROOVES EFFECTIVE TO ELECTRIFY AND POLISH PILE FABRIC, THE GROOVES BEING DISPOSED IN AT LEAST TWO DISTINCT FIELDS, WHEREIN ONE FIELD EFFECTS A LONGITUDINAL SWEEPING OF THE FABRIC AND A SECOND FIELD EFFECTS A CROSS SWEEPING OF THE FABRIC.

Jan, 26, 1971 D. KLOECKENER 3,557,415

ELECTRIFIER CYLINDER 2 Sheets-Sheet 1 Filed Sept. 2:5, 1969 I I I INVENTOR DIETER KLOECKENER zoEEom ATTORNEYS D. KLOECKENER ELECTRIFIER CYLINDER Jan. 26, 1971 2 Sheets-Sheet 2 Filed Sept. 25, 1969 \ROTATION fi ROTATION INVENTOR DIETER KLOECKENER ATTORNEYS United States Patent 3,557,415 ELECTRIFIER CYLINDER H Dieter Kloeckener, Valley Stream, N.Y., asslgnor to Polrotor, Inc., East Farmingdale, N.Y., a corporation of New York Filed Sept. 23, 1969, Ser. No. 869,994

1 Int. Cl. D06c 29/00 US. Cl. 26-2 Y 12 Claims ABSTRACT OF THE DISCLOSURE An electrifier cylinder having a plurality of grooves effective to electrify and polishpile fabric, the grooves being disposed in at least two distinct fields, wherein one field effects a longitudinal sweeping of the fabric and a second field effects a cross sweeping of the fabric.

BACKGROUND OF THE INVENTION sUMMA Y oF THE INVENTION The present invention relates generally to electrifier units for use in connection with the processing of pile fabrics; more particularly, it relates to the design of the electrifier cylinders utilized on such'units.

It has been found that in the treating of fabrics, there is a tendency to streaking of the pile fabric if every portion thereof is not subjected to substantially identical processing by the electrifier cylinder- It is known that the grooves on an electrifier cylinder effect several functions as the fabric is passed thereover. Thus, it is essential that each portion of the fabric be subjected to sub,- stantially the same surface conditions on a cylinder in order to prevent streaking and unsightly appearance when the processing is completed. The cylinders of applicants invention have been specifically designed with cooperating groove structure in order to insure an even and uniform treatment of the pile surface in order to provide completely uniform treatment of pile fabrics.

An object of the invention is to provide an improved electrifier cylinder,

Another object of the invention is to provide an improved electrifier cylinder which will not create streaking during the processing of pile fabrics.

It has been found to be desirable to provide an electrifier cylinder having grooves with different structure disposed across its circumference. In particular, such grooves may include a deeper set adapted to effect a beating and setting up of the fibers with a longitudinal sweep of the fabric, and a shallower set primarily adapted to polish the fabric with substantial lateral or cross sweeping. Where two sets of grooves are used, and maximum surface use is contemplated, the various grooves will intersect and, in some instances, terminate upon each other. At the points of termination of such grooves, temperature differentials, suction increase, and other effects have a marked influence upon the fabric. Thus, it has been found to be desirable to expose all parts of a fabric under treatment to equal numbers of such points.

Another object of the invention is to provide an improved electrifier cylinder having two discrete fields of grooves, wherein each field effects a different sweep of the fabric as the cylinder rotates in proximity thereto.

Another object of the invention is to provide an improved electrifier cylinder having a plurality of steeply pitched substantially transverse grooves thereon and a further plurality of grooves exhibiting a relatively small pitch; said further plurality of grooves being terminated upon the periphery of the drum itself.

Yet another object of the invention is to provide an improved electrifier cylinder having a groove configuration which makes possible greater decrimping, erection, and polishing with less fabric wrap about the cylinder.

In accordance with the invention, there is provided an electrifier cylinder having a first plurality of grooves disposed with a relatively steep pitch and traversing the width of the cylinder. A second plurality of shallow pitched grooves are disposed in intersecting relationship with said first plurality of grooves and terminate at each end on particular grooves of said first plurality.

A more complete understanding of the invention, along with an appreciation of the various objects and features thereof, will be obtained from the following description which is made in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a pictorial illustration of an electrifier cylinder having a grooved configuration in accordance with an embodiment of the present invention;

FIG, 2 is a developed view of the surface of a cylinder in accordance with the invention;

FIG. 3 is an enlarged side view of the lower portion of a cylinder embodying grooves of the type that might be employed in conjunction with the invention; and

FIG. 4 is an enlarged top view of a portion of a cylinder, illustrating the intersection of two fields of grooves.

DESCRIPTION OF THE PREFERRED EMBODIMENT The electrifier cylinder in FIG. 1 is adopted to rotate about an axis 16. A typical cylinder might have a diameter of 12 inches and be 6 feet long. Of course, other di mensions are used in accordance with the particular operations being performed. The cylinder 10, illustrated in FIG. 1, has a number of substantially transverse grooves 12, 13, which extend across its entire width and have a relatively steep pitch. These grooves effect a longitudinal sweeping of the fabric. Additional grooves 14, 15, having a relatively shallow pitch, intersect grooves 12, 13, and terminate at particular points thereon. These grooves effect a cross sweeping of the fabric. It will be appreciated that whereas the grooves 12, 13, extend across the entire width of the cylinder 10, grooves 14, 15, extend only across'one-half of the circumference of the cylinder.

A developed view of the surface 11 of cylinder 10 may be made by dividing the surface along the dashed line which appears between grooves 12 and 13 in FIG. 1. Such a developed view appears in FIG. 2. As illustrated in this figure, there are four steep pitch grooves, 12, 13,

17, and 18.'These grooves are arranged with the first pair 12, 17, having a right-hand pitch, and the second pair, 13, 18, having a left-hand pitch. The pitch angle is substantially the same. The remaining grooves, 14 and 15, are disposed with grooves 14a-14e having a shallow lefthand pitch and grooves 15a-15d having a shallow righthand pitch. Here, too, the pitch angle of groove sets 14.

and 15 is substantially the same.

Grooves 15a15d encompass one-half of the circumference of the cylinder and are arranged to intersect with groove 17. and terminate at each end upon parallel-- grooves 13 and 18. Thus, groove 15a, for example, creates two termination points, and 22, and an intersection point 21. Similar intersection and termination points are created by each of the remaining grooves, 15b, 15c, and 15d.

Grooves 14a14e similarly encompass one-half the circumference of the cylinder. These grooves terminate on parallel grooves 13 and 18, and intersect groove 12.

With respect to the basic structure of the grooves, attention is directed to FIG. 3 which illustrates an end view of grooves 12 and 13. As shown in this figure, the cylinder is mounted for clockwise rotation. The trailing edge 31 of groove 12 will be substantially perpendicular to the surface 11 of the cylinder. On the other hand, the leading edge 32 presents a relatively gentle slope from the surface 11 to the bottom of trailing edge 31. A steel backing member 33 may be affixed to the trailing edge. This groove configuration may be the same for both types ofgrooves on the cylinder of the present invention. It is contemplated, however, that the transverse grooves 12, 13, 17, and 18 will be of substantially greater width and depth than the grooves in groups 14 and 15. In essence, this permits the deeper grooves to function in a manner which sucks up and sets up the fibers whereas the shallow grooves tend to polish the fibers and remove any markings that may be created in the fabric.

The present invention concerns the development of fields of grooves such as shown in FIG. '2 in such a manner that the termination points appear only once on any plane taken through the cylinder and normal to the axis thereof. Such a plane would be represented, for example, by a vertical line through the developed view of FIG. 2. It has been discovered that the termination points tend to mark the fabric unless their presence is cancelled out by the subsequent beating and polishing of the other portion of the cylinder. The present design assures that all portions of a fabric subjected to the electrifier encounter the same number of termination points and therefore no streaking takes place.

FIG. 4 specifically shows a typical intersection and termination of grooves from the two groove fields. Grooves 12 and 13 are substantially vertically disposed in the figure and groove 12 is quite deep. The trailing edge 31 of groove 12 is continuous and uninterrupted. The cross-sweeping grooves 14a and 142 are quite shallow. Groove 14a terminates on the trailing edge of groove 13 and intersects groove 12. At the juncture of the crosssweeping grooves 142, 14a, and the trailing edge of the deeper grooves 12, 13, it will be noted that the shallower groove is discontinued. On the other hand, at the juncture of the cross-sweeping grooves 14a, 14a, and the leading edge of the deeper grooves 12, 13, an indentation in the leading edge is effected.

As illustrated in FIG. 2, rotation of the cylinder will result in movement of the developed surface in a downward direction. This means that relatively speaking, the fabric would be moving upward. Two deep grooves, 13 and 18, are disposed across the cylinder in diametrically opposed parallel positions. These grooves have a relatively steep left-hand pitch angle. Two additional deep grooves, 12 and 17, are disposed across the cylinder in diametrically opposed parallel positions and 90 displaced from grooves 13, 18. These grooves have a right-hand pitch angle of the same magnitude as that of grooves 13, 18. The groove fields composed of shallower grooves 14a- 14c and 15a15a' are disposed across the half-portions of the cylinder surface defined by grooves 13 and 18. Thus, both groove fields form termination points on grooves 13 and 18. Groove field 14a-14e intersects groove 12 and groove field 15a-15d intersects groove 17. All grooves within field 14a-14e are parallel and exhibit a slight left-hand pitch. All grooves within field 15a-15d are parallel and exhibit a slight right-hand pitch. The pitch angles of the two groove fields are of the same magnitude. The axial spacing, pitch angle,-and length of the grooves are selected in consideration of the length and diameter of the cylinder to yield only one termination point along any locii of points on the cylinder created by a plane intersecting the cylinder at right angles.

It will be appreciated that the present disclosure has illustrated and described a single surface configuration only. Modifications and changes may be made in both the cross-sectional configuration of the grooves and the layout thereof. All such modifications that come within the skill of those working in this art, are intended to be embraced by the following claims.

What is claimed is:

1. An electrifier cylinder for electrifying and polishing pilefabric comprising a first plurality of grooves having a steep pitch and traversing the width of said cylinder, and a second plurality of grooves having a shallow pitch and disposed to intersect at least one groove of said first plurality and terminate at each end on other grooves of said first plurality, the angular disposition of said first and second plurality of grooves being such as to effect a longitudinal sweeping of the pile by said first plurality of grooves and a cross-sweeping of the pile by said second plurality of grooves.

2. An electrifier cylinder according to claim 1, wherein the points of termination of said second plurality of grooves are arranged so that only one of said points is located upon any plane taken through said cylinder normal to the axis thereof.

3. An electrifier cylinder according to claim 1, wherein said grooves having a steep pitch are structured with a trailing edge substantially normal to the surface of the cylinder which is continuous and uninterrupted throughout its entire length.

4. An electrifier cylinder according to claim 1, wherein the grooves within each plurality of grooves are parallel with one another.

5. An electrifying cylinder for electrifying and polishing pile fabric comprising a first plurality of grooves having a steep pitch in a first sense traversing the width of said cylinder, a second plurality of grooves having a steep pitch in a second sense traversing the width of said cylinder, the grooves of said first and second pluralities being interposed with one another, a third plurality of grooves having a shallow pitch intersecting at least one groove of said first plurality and terminating at each end on the grooves of said second plurality, a fourth plurality of grooves having a shallow pitch intersecting at least one groove of said first plurality and terminating at each end on grooves of said second plurality, the pitch of said third and fourth plurality being of opposite sense, and the points of termination of the grooves of said third and fourth plurality being so disposed that only one of the points is located upon any plane taken through said cylinder normal to the axis thereof the angular disposition of said plurality of grooves being such as to effect a longitudinal sweeping of the pile by said first and second plurality of grooves and a cross-sweeping of the pile by said third and fourth plurality of grooves.

6. An electrifier cylinder according to claim 5, wherein said third and fourth plurality of grooves intersect one groove only of said first plurality of grooves and wherein all grooves of said third and fourth plurality of grooves terminate at adjacent grooves of said second plurality of grooves.

7. An electrifier cylinder according to claim 5, wherein said firstand second plurality of grooves have the same pitch angle.

, 8. An electrifier cylinder according to claim 5, wherein said third and fourth plurality of grooves have the same pitch angle.

9. An electrifier cylinder according to claim 8, wherein said first and second plurality of grooves have the same pitch angle.

10. An electrifier cylinder according to claim 5, wherein the depth of the grooves of said third and fourth plurality is less than the depth of the grooves of said first and second plurality.

11. An electrifier cylinder according to claim 5, wherein said cylinder is adapted to rotate in a prescribed direction, said first and second plurality of grooves comprising sloped walls converging to a point at the bottom, with the trailing edge of each groove having a steeper wall than the leading edge.

12. An electrifier cylinder according to claim 11, wherein the grooves of said third and fourth plurality are shal lower than the grooves of said first and second plurality.

References Cited UNITED STATES PATENTS ROBERT R. MACKEY, Primary Examiner US. Cl. X.R.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 557 ,HlB Dated January 26 1971 lnventofls) Dieter Kloeckener It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Claim 5 line 55 After "thereoff' insert a comma Siined and sealed this 22nd day of June 1971.

(SEAL) Attest:

EDWARD M.FLETCHEH,J'R. WILLIAM E. SCHUYLER, JR. Attesting Officer Commissioner of Patents FORM PO-1050 (10-69] usccMM-Dc 00311 

